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Faults, Fixes and DIY Please share your experience and knowledge with other members by contributing your own DIY, or by helping another member find the elusive fix!


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Old Sat, Nov-17-2012, 08:38:25 PM   #11
delirium45
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Default Re: DIY: Fix stripped drain bung for oil pan

that was the situation i was in when mine happened.
same deal, just with a socket, once you get past the part that is stripped/galled (two threads closest to bolt head), you will be able to twist it out, so you need initial down/out pressure on the bolt.
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Old Sat, Nov-17-2012, 11:00:45 PM   #12
jyi
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Default Re: DIY: Fix stripped drain bung for oil pan

Quote:
Originally Posted by delirium45 View Post
that was the situation i was in when mine happened.
same deal, just with a socket, once you get past the part that is stripped/galled (two threads closest to bolt head), you will be able to twist it out, so you need initial down/out pressure on the bolt.
I tried to pry it with a flathead while turning the bolt... I tried to back it out with a vice grip it out while pulling on it... it's not budging..
What do it do~~!!!
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Old Sun, Nov-18-2012, 01:37:52 AM   #13
delirium45
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Default Re: DIY: Fix stripped drain bung for oil pan

well we're certainly already into the 'try at your own risk' territory, so with that in mind:

since it is already galled up... tighten it this will remove the offending threads and ram the aluminum of the pan threads into the recesses of the steal bolt's threads. then try to 'loosen' and pull down on it... i think a flathead is the wrong idea, you want to apply even pressure while loosening.
if it comes out a little bit, keep the angular pressure while turning and try to get it to catch on the 'good' bolt threads and work it out with that way.
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Old Sun, Nov-18-2012, 05:53:04 AM   #14
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Default Re: DIY: Fix stripped drain bung for oil pan

Not helpful for removing the bolt, but when mine was stripped I tapped it out to a larger size and used a helicoil and the original bolt. A helicoil is a spring shaped thingy that screws into the retaped hole to make it the original size, I had it like that for over 2.5 years with no issues.
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Old Sun, Nov-18-2012, 04:56:30 PM   #15
delirium45
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Default Re: DIY: Fix stripped drain bung for oil pan

yea, i agree, helicoil is good idea, but it is also a last resort in my mind... if you can tap hole to a slightly larger size (still smaller than drilling to insert helicoil) you have the helicoil option as a back-up if the tapping doesn't work.
which is why i went with the larger tap, had helicoil at the ready just in case, and haven't needed it since i wrote this DIY.
glad to hear you helicoil is holding up as well, that's good news for my back-up plan, should i ever need it.
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Old Sun, Nov-18-2012, 11:15:18 PM   #16
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Default Re: DIY: Fix stripped drain bung for oil pan

well I got the bolt out..
I was under the car for about 4 hours pulling, twisting, leveraging, trying all kinds of shiiiit to try to get it out. I tried so hard, the bolt was wiggling in position but I would not back out to save my life...
I ended up hacksawing the head of the bolt off and pushed the threaded part into the drain pan and removed it via the big hole that is covered up with 6 x 10mm bolts so I didn't have to remove the pan.

The drain bung itself is pretty jacked up as you can imagine.
I ordered the Time-Sert kit and should arrive on Tuesday.
Hopefully the hole is not too damaged or widened to the point where I can't even do the Time-Sert kit. If that is the case, I'm just gonna tap a bigger hole.
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Discussing DIY: Fix stripped drain bung for oil pan in the Faults, Fixes and DIY Forum - Please share your experience and knowledge with other members by contributing your own DIY, or by helping another member find the elusive fix! at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)